While most air purifiers use a HEPA filter to collect and store pollutants, Molekule applies a new technology called photoelectrochemical oxidation, which features a filter coated in nanoparticles. As air passes through the purifier, light activates the filter and creates a surface reaction that destroys allergens, bacteria, viruses and mould. Molekule claims the technology can get rid of pollutants 1,000 times smaller than comparable products. The device is said to clean a 55-square-metre room in an hour.